Gauntree-riveter.



C. 1. WALKER;

GAUNTREE RIVETER. A'PPLICATHJN'min1uLY1ov. m5.

1,158,874. Patented Nov. 2, 191,5.

"39 3 SHEETS-SHEET l.

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8 43 5 FIGA f2.3d I 22 :.C. J.' WALKER. V GAUNTREE RIVETER.'

APPLv'cATloNvHLEn JULY 1o. 1915.

Patented Nov. 2,1915.

. INVENTQR We A I C. l. WALKER.

GAUNTREE RIVETER.`

APPLICATION r|LED1uLY1o,1s15.

Patented Nov. 2, 1915.

3 SHEETS-SHEET 3.

'INVENTOR lwvl-Nas ES ric.

CHARLES J'. WALKER, 0F GARY, INDIANA.

GAUNTBEE-RIVETER.

To all w/wm'z't may concern.'

Be it known that I, CHARLES J. WALKER,'a

-. citizen ofthe VUnited States, residing at i which the following Gary, in the County of Lake and State rof Indiana, have invented certain n ew and useful Improvements in Gauntree-Riveters. of

is a specification. My invention relates to the construction of power riveters used in` upsetting one end of the rivets to'form a head thereon, in fabricating plate girders and similar builtup members of bridges, buildings, and like structures made of rolled metal plates,

. beams, angles, and other structural metal 1'5 shapes.

Power riveters as constructed heretofore 'i have always had opposite jaws forming an 4open throat therebetween with the power operated rivet snaps Isecured in the throat adjacent to theopen outer ends of the jaws..

Not being fastened or otherwise connected, the outer ends of the jaws are free to spring andspread outward so that the depth Aof the throat has -beenyliinited to much less.

than the depth of many girders now built in large numbers.

As a resn'lt it is frequently necessary -in l riveting such girders to drive the rivets 'first from one edge and then from theopposite edge of the girder toward'the middle Aof its depth, which requires turning -the girder, a slow and expensive operation.

vThelimitations as tothe 'depth of the throat of such riveters also makes it necessary to drive the rivets adjacent to the longitudinal -center of the girders by hand. The large sizes of such open jaw powerriveters are permanently secured to a suitablefounda-- tion which requires the girder or other member being riveted to be moved relative to the riveter in positioning the girder with respect to the riveter, and in bringing the hole or line of holes for the rivets into lalinement with the rivet snaps into posirivet driving positions.

Another object of the invention is to provide a riveter of novel construction having improved means whereby the riveting jaws are closed .and prevented from spread ing `in the rivet upsetting operations and Specification of Letters Patent.

Patented Nov. a, i915.'

Application md July 1o, l1915. serial No. 39,128. i

whereby7 the depth' of the throat of the riveter may be increased to any desired extent so as to form a riveter which will drive V the rivets in the largest size girders made or likely to be made without necessitating turning of the girder during the' riveting operations.`

of thegirder or other work in the riveting operations'is prevented and overcome.

A further object of. my-invention is to' provide a gauntree riveter of-'novel con-'1 struction having improved means where'- by the 4girder or work is adjusted and held in position with respect to the riveter.

A still further object of thevinvention is to provide a ri veter having improved means whereby the riveter is moved relative to the work being riveted in the successive rivet driving operations.

. Still further objects of my invention consist in the provision of a riveter having the novel constructionl and arrangementof parts to be more fully ldescribedhereinafter and pointedout in the appended claims.

Referring now tothe drawings forming part of this specification, Figure 1 is an end elevation, partly in section, showing a gauntree riveter' constructed and arranged invaccordance with my invention. Fig. 2 is a longitudinal sideelevation of the riveter of Fig. 1. Fig. 3 is a sectional plan of the apparatus shown in Figs. 1 and 2, the section being taken on the line III-HL of Fig. 2.

In the accompanying drawings, the numeral 2 designates a base plate of considerable length which is fixed on a permanent 'foundation and is provided with a track base plate 2. The vertical inner faces 7 of the liat bars 5, 5, project inwardly beyond the vertical inner faces 8 of the ribs or "luf ' guide wheels 11, which are rotatably mounti 9 which are mounted in bearings 14 ed in bracket bearings 12 on'each truck frame 13 of the riveter, will prevent vertical lifting of the wheels 11 on the rails 5, 5.

The guide wheels 11 by engagement with the vertical faces of the rails or bars 5, 5, effectively prevent spreading or deflection of the lower unconnected ends of the jaw members of the riveter.

. Thetrack wheels 6 are secured onsh'afts in the truck frames 13, and as shown the shaft 9-for one wheel 6 on each side of the riveter is connected by the spur gear 15 and a driving pinion 16 to the ,armature shaft of an electric driving motor 17. The motors 17, of which there is one on each side of the riveter, are supported -on the shelf or platform 18 formed on the side of the truck frame 13.

Secured by one end to the truck frames 13 at the sides of the riveter are columns 19, 20, 21 vand 22 which are arranged in pairs to form opposite'jaws with a throat'23 therebetween in which the gilder or other work 24 is positioned during the` riveting operations. The jaws are conveniently formed of rolled beams of H-sections, as shown, but may be built up members or Ycastings when found necessary or desirable.`

. Secured on the top or upper ends of the columns or jaw members is a sectional cap plate 25 which is fastened to the columns by bolts 26 and tie rods 27, this cap plate having marginal ianges 28 and 29 and stiffening ribs 30.. l l

The upper endsof the jaws 19, 20, on one truck frame 13 are connected by channel struts 31, 31, and diagonal braces 32 and the jaws 21 and 22 arel connected -by similar bracing in the same manner.

The upper end 0f each jaw member 19 and 20, 21 and 22, is connected to the outer end of the' truck frames 13 by the knee o r bracing 33, the channel 34 forming part of this bracing forming a slide or track for the counterweights 35 for the vertically movable cross arms 36 and 37 on whichthe rivet snaps are mounted.

The cross arms 36 and 37 extend horizontally between the jaw members 19, -2O, on one side of the riveter, and jaw members 21., 22, on the other side, and have ribs or flanges on the ends thereof forming slides 38, 38, embracing the flanges of the H-beams formv ing the jaw mem'bers 19, 20, and 21, 22.

,i' Cables 39, or similar fiexible connections, which pass over the wheels or pulleys 40 in the stands 41 on top o'f the cap plate 25 are employed to connect the cross arms 36 and 37 with the counterweights 35, and the counterweights are provided with wheels 42 which run inthe track formed between the flanges of the channels 34 forming part of formed the knee bracing 33 at the sides of the jaw members 19, 20, 21 and 22.

The throat 23 formed between the jaws formed by the members 19, 20, and 21, 22, has a contracted upper end, angles 43 arranged in pairs back to back deining the horizontal width of the narrow portion 23a of the throat. T he` lower ends of the angles 43 are connected to the jaw members 19, 20, 21 kand 22, by angles 44 and plates 45, and the upper ends of the angles 43 are connected to a plate 46 which is connected to the jaw members by diagonal angles 47 and 48 (see Fig. 1).

Mounted in a pocket 49 in the upper face of the cross arms 36 and 37 are double acting fluid pressure cylinders 50 and 51 having pistons or plungers 52 and'53 arranged to reciprocate horizontally. The' outer. ends of the' pistons or plungers are provided with rivet snaps 54, 55, which areremovably and adjustably secured to the plungers and which arein axial alinement in a' vertical plane. The cylinders 50, 51, provide power means for reciprocating the plungers 52, 53, and causing a relative approach of the rivet snaps 54, 55, in the rivet upsetting operations. f

The ends of the cylinders 50 and 51 are provided with ports 56 and 57 by which the cylinders are connected in any desired manner to a. source of fluid pressure, suitable valves being employed in the pipes connecting the ports and a source of fluid pressure to enable the fluid pressure to be shut off and turned on when desired.

The counterweighted cross arms 36 and 37 are connected to lifting screws 58, of which there is one for each cross arm. The upper ends of these adjusting screws, which extend lengthwise vertically and are mounted in bearings 59 in the cap plate 25, and bearings 50 in the truck frames 13', are provided with bevel gears 61 which mesh with the bevel pinions 62 on one end of shafts 63, 63. The shafts extend through bearings 64 positioned on the cap plate 25 and are connected to the ends of the armature shaft of an electric driving motor 66 which is mounted on top of the cap plate 25. 1n this way, when the motor 66 is operated the arm liftingscrewsS are rotated, theA screws raising and lowering the cross arms 36 and 37 andthe rivet snaps 53 and 54 supported. thereon and maintaining the rivet snaps in. horizontal alinement.

Mounted on the track formed on the base plate 2 by the rails'3, 3, is a plurality of trucks 67 which as shown include a body mounted on the flanged"tf1-elchW wheels1 63;`

The number of trucks used will varvgvdepending upon the length of the work beingl riveted, and each truckas provided Witna vertically adjustable support 69.1o`n which.

the Work 24 rests when positioned Within in the girder- 24. Therivet'snap 55 is. then .the throat 23 of the riveter. The support A 69 is connected by a downwardly extending screw threaded sha-ft 70 to an adjusting wheel 71 rotatably mounted in the body of the truck 67` so that the support 69 can be 'raised and lowered vertically while positioning and leveling' a girder or other work 24 supported thereon within the throat 23 of the riveter. -Tie bolts 72 and clamping bars 7 3 are employed to hold the flanges and web membersl of the girder 24 in assembled relation during the riveting operation.

In the operation of my improved apparatus, the gauntree riveter is mounted so as to be movable on the base plate 2, being held from tipping sidewise by means of the series of flanged Wheels 11, the flanges 10 of these wheels engaging with the lower surface of the overhanglng side of the gauntree track rails or bars 5 in preventing tipping of the gauntree on ,the base plate a.

A girder or other Structure 24 to be riveted, bolted `together by clamping bars 73 and bolts 72, is mounted on 4the'trucks 67 which travelon the trackformed on the base plate 2 by` the railsv 3. 3. The hand wheels 71 on the trucks 67 are then turned to adjust the supports and bring the girder'24 into position so that the rows of rivet holes into which the rivets are to be driven will extendl vertically. j

The rivet snaps 54 and 55 are then secured in adjusted position in the ends of the plung ers 52 and 53 of the actuating cylinders l50 and 51.

r The motor 66 on top of the-riveter is then rotated .to raise or lowerthe rivet Snaps 54,-

55, until in-,lalinement Vwith. the hole to be riveted. `The ,j r1vet'snaps' are retractedand a heated. rivet'isy insertedl thev proper hole advanced byvgadmitting fluid pressure'into the rearendfof thecylinder 51. The forward movement of the plunger'53 brings therivets'nap 55 into engagement with the .i head of' theI rivet within the hole of the girder 24. .-Flu-id pressure is then admitted 'to the' other cylinder 50 and the plunger 52.

isl advanced so as to cause the rivet snap 54 on this plimger to approach the other rivet snap'53. Inthis approaching movement the rivet snap 54 is brought into engagement with the heated end of the rivet to upset the rivet and ,form a head thereon.l snaps are then retracted and are adjusted vertically on the jaws-19, 20, 21, 22, to bring the rivet snaps into alinement with the successive holes in a vertically extending row -of holes in the girder, and the above de scribed riveting operations are repeated in driving each rlvet. After the r1vetS in any one vertical line of rivets have been driven,4

and the rivet snaps have reached the -top edge of the girdcr being riveted, the gauntree is moved onlthe track rails 5, 5, and

The rivet.

horiaontal lines of rivets inthe flanges are driven, up to a point which will bring the rivet snaps into alinement with the next row of holes in the 'girderQ The rivets maybe driven in this line of holes -from ,the top toward the bottom o f the girder or the rivet snaps maybe moved by means of the motor 66 and feed screws 58 until again at thebottom of the girder, in which case the successive rivets will be driven from the bottom toward the top cover plate of the girder 24. After the rivets have been driven in the second line of holes the gauntree is again adjusted on the track rails 5, 5, of the base plate 2, and the above described operations are'repeated until all of the necessary rivets have been upset and headed. The riveted girder is then removed from the throat 23 of the riveter and another girder after being positioned' therein is riveted as has been described.

The advantages of my invention will be apparent to those skilled in the art.

By l

means of my improved apparatus the'necessity of turning large girders 1n riveting such girders and of moving the girders relative to the riveter is avoided and overcome. The girder is readily adjusted with the rows of holes'in vertical and horizontal alinement.- After being leveled the girder remains in such position untilthe .completion of the rivet upsetting operations. By .employmg means forming a closed throat on the riveter, spreading ofthe jaws by the force ofy the rivet operations is prevented, and the .depth of the throat which may be provided; 1s materially increased` over that possible with open throat riveter's.

Modilications in the construction and ar-v ,rangement of parts mayv be made.

`throat, means for causing a relative approach of said rivet snaps, a base on which said frame is movably mounted, means for moving the'frame on the base, and means engaging with and preventing spreading of the open ends of said jaws in the rivet upsetting `operations.

2. A gauntree'riveter comprising a frame having opposite jaws forming an open throat, means 'for supporting vthe .Work being riveted witlun the throat, vertically adjustable and in said throat, meanspr snaps vertically in Said causing a relative approach of said rivet I v the framefor adjusting ing said tra l gior rotating said wheels 1n moving the trame ,longitudinally within snaps, a base on which the frame is movably mounted, andmeans for moving said frame on the base, said base having means engaging with and preventing spreading ot the lower open ends 'of the jaws 1n therivet upsetting operations. i

3. A gauntree riveter comprising air-ame an open -f having opposite jaws forming 4 throat, means for supporting the work being riveted within the throat, vertically adjustvable and relatively niova le rivet Snaps in 'Said throat, meansfor adjusting the rivet snaps verticallyin said throat, means for causing a relative approach of said-rivet snaps, a base on which the frame is Inova ly mounted and means for moving said frame on the base, said lbase having means engaging with and preventing spreading of the free ends of said jaws in the rivet upsetting operations, and means for adjusting the work vertically within said throat.

4. A gauntree riveter comprising aframe having' opposite jaws forming an open throat, means' for supporting th work being riveted within the throat, vertically adjustable and relatively movable rivet snaps in said throat, means foradjusting the rivet snaps vertically in said throat', means for causing a ,relative approach of said rivet snaps, a base on which the frame is movab y mounted and means for moving said rame on the base, said base having means\engag ing with and preventing spreading oi' the free ends of said jawsin the rivet upsetting operations, means for adjusting the work the throat, and means, for adjusting the work vertically within said throat.

5. A gauntree riveter comprising a Jframe having opposite jaws Jforming an open.

throat, sliding cross arms on the opposite jawshaving vertically movableiluid pressure cylinders mounted lthereon, means on the arms vertically on the opposite jaws, counterweightsfor said arms, pistons in said cylinders having rivet snaps removably means for supplying fluid pressure to said cylinders to cause a rivet snaps on said pistons, a base forming a track orrwhich said frame is movably mounted, track wheels on the frame engagk rails, and means on the frame 'on said base, said track rails engaging with and preventing spreading of the :jaws when said rivet snaps are actuated inthe rivet upsetting operations.

6. A gauntree riveter comprising a frame forming an open throat, vertically adjustable sliding cross 'base forming a having opposite jaws throat, sliding cross secured thereon,

relative approach 'of the.

larms oni-the opposite jaws having duid pres sure cylinders mounted thereon, means on the frame for adjusting thecross arms vertically, counterweightssfor said arms, pistons in said cylinders having rivet snaps removablysecured thereon, means for supplying liuid pressure .to said cylinders to cause "a relative approach of the rivet snaps, a track on which said frame is=1novably mountedffftrack wheels on the itrame engaging said track rails, and means on the Jframe for rotating said wheels in moving the frame on said base, said rails engaging withfand preventing spreading of the jaws when" the rivet snaps are actuated in the rivet upsetting operations, track rails forming a second track on said base, and wheeled trucks on said second track on which the work being riveted is supported during the rivetingoperations.

7 A gauntree riveter comprising a frame having opposite jaws -orming an open throat, sliding cross arms on the opposite jaws having vertically movable uidpressure cylinders mounted thereon, means on the framev for adjusting the cross arms, counter-weights Ji'or said arms, pistons in said cylinders having rivet snaps removably secured thereon, 'means for supplying uid pressure 'to said cylinders to causea relative approach of the rivet ysnaps on said pistons, a base forming a tracli'on'which said frame is movably mounted, track wheels on the frame engaging said track rails, means on the frame for rotating said wheels in moving the frame on said base, said rails engaging with' and preventing spreading o'i the 'aws when the rivet snaps are actuatedin the rivet upsetting operations, track rails orminga second track on said base, a pluralityov wheeled trucks on said second track on which the work being riveted is suported during the rivetingpperations and means for adjusting the work on the trucks in positioning the work within said throat.

8. A gauntree riveter comprising a trame forming an open arms on the opposite jaws having vertically movable fluid pressure cylinders mounted thereon, means on the frame for adjusting the cross arms vertically in unison, counterweights i'er arms, pistons in said cylinders having rivet snaps removably secured thereon,'means for supplying fluid pressure to sai cause a relative approach. of the rivet snaps on said pistons, aba s`e forming a track on whichfsaid frame is movably mounted, track wheels on the frame engaging said track rails, and means for rotating said wheels in moving the frame on said base, said rails'engaging with and preventing spreadingof the' jaws when said rivet snaps are actuated in the rivet setting operations, track rails forming va second track on said base, a nlud cylinders to ico ies

. the arms vertically, means for causing 5 1n positioning the work within said throat.

9. A gauntree riveter comprising a frame having opposite jaws forming a throat, sliding cross arms on the opposite jaws having l relatively movable riv'et snaps mounted thereon, means on the frame for adjusting relative approach of the rivet snaps, a vbase forming a track on which said frame is mov- -ablyI mounted, track wheels onthe frame i engaging said track rails, and means on the i frame for rotating said wheels in Vmoving the frame, said rails engaging with and 'preventing spreading of thejaws iwhen said rivet snaps are actuated in the rivet setting operations, track rails forming a second track on said base, a plurality of wheeled trucks on said second 'track on which the work being riveted is supported during the riveting operations, means for adjusting the work vertically in positioning thel work in said throat, and means for maintaining the work in adjusted position on said trucks.

' In testimony whereof I have hereunto set my hand.

CHARLES J. WALKER.

i Witnesses:

HARRY GEOGHEGAN, CHESTER H. MERRILL.

Copies of this Apatent mayl be obtained for ve cents each, by addressing the ff Commissioner of, Patents,

` Washington, D. C. 

